22944809 has 2 divisors, whose sum is σ = 22944810. Its totient is φ = 22944808.

The previous prime is 22944793. The next prime is 22944841. The reversal of 22944809 is 90844922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20976400 + 1968409 = 4580^2 + 1403^2 .

It is a cyclic number.

It is not a de Polignac number, because 22944809 - 2⁴ = 22944793 is a prime.

It is a Chen prime.

It is equal to p_1444979 and since 22944809 and 1444979 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (22946809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11472404 + 11472405.

It is an arithmetic number, because the mean of its divisors is an integer number (11472405).

Almost surely, 2^22944809 is an apocalyptic number.

It is an amenable number.

22944809 is a deficient number, since it is larger than the sum of its proper divisors (1).

22944809 is an equidigital number, since it uses as much as digits as its factorization.

22944809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 22944809 is about 4790.0740077790. The cubic root of 22944809 is about 284.1590435296.

The spelling of 22944809 in words is "twenty-two million, nine hundred forty-four thousand, eight hundred nine".